Dental press.



F. 0.. JAQUES, JR.-

DENTAL mass, APPLICATION TILED MAY 27. 1908.

'- Patented 0011.12, 1909.

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ITEI) STATES PATENT OFFICE. FERNANDO O. JAQUES, JR., OF CRANSTON, RHODE ISLAND, ASSIGNOR TO THE CENTRAL I TOOL COMPANY, A CORPORATION OF RHODE ISLAND.

DENTAL rnnss.

936,633. Specification of Letters Patent. Patented Oct, 12, 1909, Application filed May 27, 1908. Serial No. 435,269.

T all whom it may concern." I pinion. The block, 12, is provided with two Be it known that I, FERNANDO O. JA UES, series of vertical cylindrical passages, 17 J r., a citizen of the United States, residing and 18, one series upon each side of the openat Cranston, in the county of Providence 'ing, 14. Slidable in the passages, 17, are

and State of Rhode Island, have invented cylindrical plungers, 19, of graduated di- 0 certain new and useful Improvements in ameter, each provided with a rack, 20. In Dental Presses, of which the followingis a passages, 18, are also plungers, 21, graduated specification. in diameter provided with racks, 22. The

My invention relates topresses for cutting pinion, 16, engages and operates the racks,

10 and forming dental crowns and similar artiand 22 of the respective plungers, sothat 5 cles from sheet metal, and has for its prieach series of plungers may be simultanemary objects compactness, cheapness of conously moved in op osite directions. One or struction, simplicity, accuracy, convenience more handles, 23, i lxed in the shaft, 15, enfor use, and speedin operation. able the latter to be manually turned in 15 To the above ends essentially my invention either direction. The die plate, 13, is proconsists in the multiple and graduated relavided with a series of openings, 25, in axial tion of the plungers and die plates; in loalinement with the plungers, l9; and with a eating all the dies in the die plate, and in series of openings, 26, in axial alinement pivotally mounting the frame. with the plungers, 21. In the openings, 25,

20 Other novel features will be hereinafter are fixed'drawing dies, 27, provided with a set forth and claimed. I tapering drawing surface, and cutter seats,

In the accompanying drawings which con- 28, upon their upper end; the whole constitute a part of these specifications,Figure stituting a combined cutting and drawing 1 is a front elevation of my novel press. die.' In the openings, 26, are mounted grad- 25 Fig. 2, a transverse section online at m of uated drawing dies, 30, which are of less Fig. 1, showing in broken lines a second podiameter than the graduated dies, 27, and sition of the base. Fig. 3,-a vertical section preferably are not provided with cutter seats. of the same on line y 3 of Fig. 2, and Fig. 4, It is not absolutely necessary that more than a detail view of the cutting tool. one of the dies be provided with the cutting :0 Like reference characters indicate like seat, 28, namely the die, 27, of the largest parts throughout the views. diameter, although in practice one or two of My press, in the form thereof herein the next in size are usually provided with shown, comprises a bed plate, 1, provided cutting seats, 28. The cutter or die, 32, to near one end with an orifice, 2. Pivoted be used in this press is, as shown in Fig. 4,

5 upon a stud or screw, 3, in the center of the cylindrical and provided with an axial open- 0 plate is a base plate, 5, provided near one ing, 33, adapted to receive the lower end of end with an opening, 6, in vertical alinethe largest of the plungers, 19. This'cutter ment with the opening, 2, and near its other is shown in broken lines in Fig. 3 applied to end with an opening, 7, in longitudinal the plunger. The fit thereof should not be 3 alinement with opening, 6. Whenever it is so tight as to prevent its application to and desired to maintain the upper and lower removal from the plunger manually. base plates, 1 and 5, in fixed relation with The operation of the press is as follows: each other, a removable pin 7 may be in- The sheet metal strip from which the crown serted in the opening, 6 or 7, and 2. The is to be constructed is laid upon the upper st-anolard or frame comprises two uprights or face of one of the largest cutting and formsupports, 8 and 9, secured by screws, 10 and ing dies, 27, beneath its corresponding 11, or otherwise to the plate, 5, and a longiplunger, 19, upon which is frictionally tudinally disposed bearing block, 12, intemounted the cutter, 32, and a handle, 23, is gral with the upper porti n f th Suprotated to downwardly throw the plunger ports, together wlth a die plate, 13, integral by means of the rack and pinion mechanism. 195 with the supports and below the block. This movement cuts the disk of stock upon Mounted centrally in an opening, 14, in the seat, 28. The cuttter, 32, is then removed the bearing block, 12, is a longitudinal roand the plunger continuing its travel forces tary shaft, 15, upon whose surface are formed the disk downwardly through the taperm teeth, 16, the whole constituting a long or formlng portlon of the d e, 27, thereby Q 936,633 forming the disk into cup shape. This dies in the plate in axial alinement with the cupped blank is then inserted successively in the forming dies of less diameter whereby the blank is gradually lengthened and its diameter lessened to the required dimensions.

It will be noted that the plurality of plungers actuated by a single operating shaft permits the simultaneous drawing of a plurality of crowns at the same time; that the pivotal mounting of the machine gives the operator convenient access at all times to any of the dies or other macl'iine-parts; and that both the cutting and forming operations are performed nearly contemporaneously and upon a single horizontal plane-.-

What I claim is 1 In av denta l press, the combination of two parallel series of plungers provided with racks, a pinion member intermediate the two seriesofplungers and engaging the racks of both, combined with forming dies disposed in axial alinement witlr saict plungers for successivelycooperating therewith.

2. In a dental press, the combination with the frame, of two parallel series of vertically movable plungers mouited in said frame, means in theframe movable between said pl ungers and engaging witl r both seriesthereof for simultaneously raising the one series and depressing the-other, arigid die plate in the frame below the plungers, and diesmounted in said die plate in axial alinement with the several plungers-for successive cooperation witlr the plungers.

3. 1 -11 a dental press, thecombination with a} frame, of two series of vertically disposed plungers inthe frame, horizontally rotatable means in the frame for simultaneously moving each series of plungers in opposite directions, a die plate fixed in the frame be low the pl ungers, graduated drawing dies mountedin said plate in: axial alinement with one series ofplungers, and independent diesinthe die-plate in axial alinement with the other series of pl'ungers,- said dies being arranged for successive cooperation with the plungers.

4:.- ln a dental pre'ss, the combination witlr the frame, of two series of plungers in the frame graduated in diameter, means in the frame engaging both series of plungersfor' simultaneously moving each series of plungersin opposite direotions,-a die plate fixed in the frame below the plu11g6F-S,-2LI1C1 fO1-Hl ing dies in the die plate in. axial alinement witlr the plungers for successive cooperation: therewitl'i.

5. In adental press, the combination with the frame, of two series of plungers in the frame graduated in diameter, means in the frame engagingboth series ofplungers for simultaneously moving each series of plungers'in opposite directions, a die plate fixed inthe'frame-below the plungers, and cutting plungers for successive cooperation therewith.

6. In a dental press, the combination with the frame, of two series of plungers in the frame graduated in diameter, means in the frame for simultaneously moving each series of plungers in opposite directions, a die plate fixed in the frame below the plungers, combined cutting and forming dies in the plate in axial alinement with some of the plungers, and forming dies in said plate in axial alinement with others of the plungers for successive cooperation therewith.

7. In adental press, the combination with the frame, of two series of vertically disposed graduated plungers in the frame, means in the frame for simultaneously movmg each series of plungers in opposite directions, a stationary die plate mounted in the frame below the plungers, and two series of graduated dies in the plate in axial alinement with their respective plungers for successive cooperation therewith.

8. 111a dental press the combination with the frame, the die' plate in: the frame, dies in the plate, of a bearing block in the frame above the die plate, two series of plungers vertically mounted in the bearing block in axial alinement with the dies, rack teeth upon the plungers, a shaft provided with pinion teeth mounted in the block intermediate the two series of plungers and engaging the rack teeth of both series of plungers through the pinion teeth, and an operating handle upon the shaft.

9. In a dental press, a frame, plate therein, of plungers mounted for vertical movement in a fixed part of the frame in vertical alinement with the dies, said plungers being provided with rack teeth, a shaft disposed at right angles to said plungers intermediate thereof and toothed to engage the teeth of both series of plungers, and means for retating said shaft.

a fixed die l OL- In a= dental press, aframe, a fixed die plate therein, dies in said plate, two series of plungers mounted for vertical movement in a fixed part of the frame in vertical alinement with the dies, said plungers being provided with rack teeth, a shaft disposed at right angles to said plungers intermediate thereof and toothed to engage the teeth of botlr series of plungers, and means for rotating said shaft, said plungers and diesbeing. graduated in size.

In testimony whereof I have aflixed my signature in presence of two witnesses.

rnaxaxno o. Jaeursjfi.

Witnesses:

Hon-Arm E. Bnnnows, J'osnrrr E. BURNS.

dies insaid" plate, two series- 

